> Grinding Vials

Bead beating can be performed in a variety of vessels, including tubes, vials and plates.

Center Diagram

OPS Diagnostics' grinding vials are self-standing and have a re-enforced flat bottom to prevent cracking of the base during homogenization.

Considerations when selecting a grinding vessel

  • Vial Composition: Polycarbonate (PC) is perferred over polypropylene (PP), and polyethylene (PE) as it is durable, clear and impact resistant.
  • Sample Properities: Most temperature sensitive samples require cryogenic grinding.
  • Sample volume/ amount: Over or under filling vessels can lead to inefficient homogenization and damage the vessel.
  • Homogenizer: Not all homogenizers can take different vials sizes.

See the table below for general overview on the different vial options.

For a more in depth comparison please visit our, Selecting Grinding Vials for Sample Homogenization page.

Vial Comparison
  Disruption Tube 4 ml Grinding Vial 15 ml Grinding Vial 50 ml Grinding Vial
Material PP PE
Dimensions (in) 0.4 x 1.7 0.5 x 2 1.125 x 1.667 1.125 x 3.5
Bottom Skirted or conical Flat Flat re-enforced Flat re-enforced
Working volume 0.5-0.8 ml 0.5-2 ml 2-8 ml 9-16 ml
Autoclavable Yes Yes Yes Yes
Cryogenic Capability No Yes Yes Yes
Grinding Media Vary 1 x 3/8" ball 2 x 7/16" balls 2 x 7/16" balls
2 x 9/16" balls
Plant Tissue up to 100 mg 100-200 mg Up to 1 gm 1-3 gm
Seeds - ≤ 500 mg (1 kernel)   ≤ 4 gm (≈10 kernels)   4-8 gm (≈22 kernels)
Animal Tissue Up to 100 mg 100-200 mg Up to 2 gm 2-4 gm